Aegis Group has acquired a minority stake in The Upper Storey. The award-winning digital creative agency, based in Singapore, will become part of Isobar network in Asia Pacific and rebranded as TUS Isobar. Founded in Singapore in 2001,TUS has a roster that includes Microsoft, American Express, Intel, Daimler, Dell, Draeger, UOB, Mediacorp, NOL and Como Hotels and Resorts.